JPS5792976A - Hierarchy encoding system - Google Patents

Hierarchy encoding system

Info

Publication number
JPS5792976A
JPS5792976A JP55169113A JP16911380A JPS5792976A JP S5792976 A JPS5792976 A JP S5792976A JP 55169113 A JP55169113 A JP 55169113A JP 16911380 A JP16911380 A JP 16911380A JP S5792976 A JPS5792976 A JP S5792976A
Authority
JP
Japan
Prior art keywords
blocks
picture
hierachical
level
encoded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55169113A
Other languages
Japanese (ja)
Inventor
Tadanobu Kamiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55169113A priority Critical patent/JPS5792976A/en
Publication of JPS5792976A publication Critical patent/JPS5792976A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/415—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE:To discriminate an object picture from the other rapidly and compress information, by giving a hierachical structure of plural levels to encoded information and by decoding information of only higher-level hierachies to reproduce the whole image and by decoding information up to lower-level hierachies to restore the original picture. CONSTITUTION:A picture consisting of Lx-number lateral and Ly-number longitudinal picture elements is divided by a block consisting of 2NX2N-number picture elements to obtain the Nth blocks Bi(N)j(N), and densities Di(N)j(N) of respective blocks are obtained and are encoded, and the Nth hierachical code is added to the start of them. Next, the block Bi(N)j(N) is divided into 2X2 to obtain the (N-1)th blocks Bi(N-1)j(N-1) consisting of 2N<-1>X2N<-1>-number picture elements, and densities Di(N-1)j(N-1) of respective blocks are obtained and are encoded successively until density values of four blocks are determined on a basis of known density values of higher-level blocks, and the (N-1)th hierachical code is added. This procedure is repeated to divide the picture into the 0th blocks Bi(O)j(O) which consists of one picture element and have a binary density Di(O)J(O).
JP55169113A 1980-12-02 1980-12-02 Hierarchy encoding system Pending JPS5792976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55169113A JPS5792976A (en) 1980-12-02 1980-12-02 Hierarchy encoding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55169113A JPS5792976A (en) 1980-12-02 1980-12-02 Hierarchy encoding system

Publications (1)

Publication Number Publication Date
JPS5792976A true JPS5792976A (en) 1982-06-09

Family

ID=15880536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55169113A Pending JPS5792976A (en) 1980-12-02 1980-12-02 Hierarchy encoding system

Country Status (1)

Country Link
JP (1) JPS5792976A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373786A (en) * 1986-09-16 1988-04-04 Nippon Telegr & Teleph Corp <Ntt> Hierarchical burst communication system
JPH01109979A (en) * 1987-09-30 1989-04-26 Siemens Ag Image data sorting for digital tv signal
JPH0262163A (en) * 1988-08-29 1990-03-02 Kokusai Denshin Denwa Co Ltd <Kdd> Encoding system for reduced picture
JPH03501552A (en) * 1987-10-05 1991-04-04 インテル　コーポレーシヨン digital video transmission system
JPH03501550A (en) * 1987-10-05 1991-04-04 インテル　コーポレーシヨン digital video compression system
JPH03501551A (en) * 1987-10-05 1991-04-04 インテル　コーポレーシヨン digital video decompression system
WO1995007005A1 (en) * 1993-08-30 1995-03-09 Sony Corporation Device and method for encoding image

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373786A (en) * 1986-09-16 1988-04-04 Nippon Telegr & Teleph Corp <Ntt> Hierarchical burst communication system
JPH088685B2 (en) * 1986-09-16 1996-01-29 日本電信電話株式会社 Hierarchical burst communication method
JPH01109979A (en) * 1987-09-30 1989-04-26 Siemens Ag Image data sorting for digital tv signal
JPH03501552A (en) * 1987-10-05 1991-04-04 インテル　コーポレーシヨン digital video transmission system
JPH03501550A (en) * 1987-10-05 1991-04-04 インテル　コーポレーシヨン digital video compression system
JPH03501551A (en) * 1987-10-05 1991-04-04 インテル　コーポレーシヨン digital video decompression system
JPH0262163A (en) * 1988-08-29 1990-03-02 Kokusai Denshin Denwa Co Ltd <Kdd> Encoding system for reduced picture
WO1995007005A1 (en) * 1993-08-30 1995-03-09 Sony Corporation Device and method for encoding image

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